Use the slope formula to determine the slope of the line containing the two points. (9, 5) and (9, 8)
A) $\frac { 13 } { 18 }$
B) 0
C) $\frac { 1 } { 6 }$
D) undefined

Question

Use the slope formula to determine the slope of the line containing the two points. (9, 5) and (9, 8) 
A) $\frac { 13 } { 18 }$
B) 0
C) $\frac { 1 } { 6 }$
D) undefined

Quizplus · Accepted Answer

The slope formula is $m = \frac{y_2 - y_1}{x_2 - x_1}$. Substituting the given points (9, 5) and (9, 8) into the formula gives $m = \frac{8 - 5}{9 - 9}$, which simplifies to $\frac{3}{0}$. Since division by zero is undefined, the slope of the line is undefined.

Use the Slope Formula to Determine the Slope of the Line